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Thread: 205/40/17

  1. #1
    ephatch member BlackSi2002's Avatar
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    205/40/17

    how much would 205/40/17 throw off my speedo, i've heard 215/45/17 it will 1 mph difference, its it about the same

  2. #2
    I heart 9,500 RPM CgSi's Avatar
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    I think that is equivalent to the stock tires and rims ??

  3. #3
    DrPimpSiR
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    Someone posted this link before, but I don't remember who.
    http://www.miata.net/garage/tirecalc.html
    This is a pretty cool calculator.

  4. #4
    ephatch member 2k2civicSi's Avatar
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    i have 205/40/17s on my car its not off at all its same over all size

    if you want you can use the tire calc on http://www.7thgencivic.com/stuff/tire_calc.cfm

  5. #5
    boognish David K.'s Avatar
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    I've posted this reply a couple times before, but I was told by a Tire Rack rep. that a 205/40/17 is the correct size to use, as it is the closest to factory height. A 215/40/17 is a little taller. This is what I was told, and most places also seem to recommend a 205/40/17, presumably for this reason. If you're going to 18s, a 225/35/18 is closest to stock.

  6. #6
    Member fishboy's Avatar
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    so with my 205/45/16s am i throwing my speedo off? if so by how much? how about my odometer? is it actually putting in more miles than i am traveling? i didn't notice much of a diff in the odometer.

  7. #7
    ephatch member BlackSi2002's Avatar
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    thanks guys, i think i'll go with 205/40/17, because they come on the rims i want, and its cheaper that way,later

  8. #8
    SLOlife
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    according to the miata calc a 215/45-17 would be the closest only .2% slower than stock.

    a 205/40-17 is 3.1% to fast. I think I would trust tirerack more than the miata calc though:D

  9. #9
    Herk Driver PogoFX's Avatar
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    I just got off the phone with tirerack and was told that the exact tire size match would be 205/45/17. I went to the tire diameter calculator at discount tire and verified that this is correct. Both the stock wheel and the 205/45/17 have a diameter of 24.2 inches. The next closest match would be 215/45/17 with a diameter of 24.6 inches. This would make you speedo read 1.6% slow, or about 60mph when your doing 61 mph. The 205/40/17 would be 23.5 inches a differnce in speed of 3%. You would be showing 60mph on the speed when your only doing 58mph. Hope this helps, I'm doing my research on upgrading wheels now. Thinking of the Superleggeras in white for my white SI. Here is a link to the tire size calculator at discount tire.

    [http://www.discounttire.com/dtc/broc.../tireMath.jsp?
    ;)

  10. #10
    ephatch member 02SilverSiHB's Avatar
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    Originally posted by DrPimpSiR
    Someone posted this link before, but I don't remember who.
    http://www.miata.net/garage/tirecalc.html
    This is a pretty cool calculator.
    :D me :)

  11. #11
    Febrezee
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    IMO the best overall fit you could change to Is the 225/35/18... That is if it fits...

  12. #12
    believe in Buzz! greenguy's Avatar
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    Originally posted by PogoFX
    Thinking of the Superleggeras in white for my white SI. Here is a link to the tire size calculator at discount tire.
    There is a note on www.ozwheels.com about tire spacers and trimming to the cars wheel well with that tire. I am torn between the gun metal or the white. Though a ~$50 price difference per wheel could be the deal breaker. Hmmm....

  13. #13
    ephatch member BlackSi2002's Avatar
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    i'm going to get the gun metal Superleggeras next month, i hope, what do you mean trimming to the cars wheel well with that tire, what tire, and what trimming, thanks, later.

  14. #14
    Herk Driver PogoFX's Avatar
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    Question

    Go to the OZ site at this link and select Fitment Guide. Enter in the 2002 Honda SI and it will bring up the wheels that fit. Selecting the Superleggera shows no notes. There is a place for them but nothing is listed. It appears that it fits for all sizes. Did I miss something somewhere else?

    http://www.ozwheels.com/OZ_html/products_.html

  15. #15
    believe in Buzz! greenguy's Avatar
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    Originally posted by PogoFX
    Go to the OZ site at this link and select Fitment Guide. Enter in the 2002 Honda SI and it will bring up the wheels that fit. Selecting the Superleggera shows no notes. There is a place for them but nothing is listed. It appears that it fits for all sizes. Did I miss something somewhere else?

    http://www.ozwheels.com/OZ_html/products_.html
    http://www.ozwheels.com/OZ_mainFrame.html

    Its there I just saw it. :) or:(

    EDIT: I just checked my link and it doesnt go directly to the page but go to fitment guide, and click on specs, the notes at top of page. Its there.

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